Ditching-machine



A. BEAMER. DITCHING MACHINE.

APPLICATION FILED AUG.Z5. |919.

Patented Oct. 19, 1920.

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UNITED -fsTATfEs rArinr'ut'r BEAMER, or AltrinAIm., IOWA.

yDIToHInGr-rlrACHINE.

K Specification of Letters Patent. r i Patenti-3d Ot, 19,

Application filed August 25,1919. serial Nq. 319,529.

To all fr0/wm t may concern:

Be it known that I, ALBERT BRAMER, a citizen of the United States ofAmerica, and a resident of Aredale, Butler county, Iowa, have inventedcertain new and useful Improvements in Ditching-Machines, of which thefollowing is a speciiication.

My invention relates to improvements in ditching machines, and theobject of my improvement is to provide for machines used to excavatetrenches to receive tiling, auxiliary devices combined therewith to formin a trench a longitudinal trough shaped to fit and properly supporthollow tiling alined therein.

This object I have accomplished by the means which are hereinafterdescribed and claimed, and which are illustrated in the accompanyingdrawings, in whichy Figure 1 is a side elevation of parts of themechanism and frames of a trench excavating machine, with parts of eachremoved orbroken away, supplied with my improved troughing device; Fig.2 is an enlargedperspective view of said troughing device; and Figs. 3and 4 are like cross-sections of a trench formed with and without a tilereceiving Atrough. respectively as made by my device.

In said drawings, similar numerals and characters of reference denotecorrespondingparts throughout the several views.

l y invention herein is additional to and a feature of improvement uponmy ditching machine, upon which an application for patent is pending inthe United States Patent Office, Serial No. 193,511, filed September 27,1917, hence I do not specifically show,

. describe nor claim other features ofsaid machine, but illustrate onlysuch parts thereof as will render clear the use and construction orsupporting-means of my present device.

Referring; to Fig. 1, the numeral 10 denotes the main framey of aditching machine supported on carrying and on tractionwheels 12 nd 11respectively. A sub-frame 9 is pivotally connectedat one end to saidmain frame 10 to swing up and down with a rotatable excavating-devicev13, vbut the means and mechanisms for imparting rotation to thetraction-wheels, and for rotating and raising or lowering the excavatingdevice have been omitted for the sake of clearness. About thecircumferential periphery of said rotary excavating-device areequidistantly and alternately arranged. excavating-blades 14C andedge-trimming blades 15, whose construction and operation aresufficiently described in my said precedingapplication, but theexcavating-device in its rotation and forward movement is adapted toexcavate a trench a with flat bottom b.

My trough-cutting device comprises a pair of like forwardly anddownwardly curved arms or hangers -1 fixed to the free ends of theside-bars of the sub-frame 9 and having the rear part of theirinterspace closed by Y the curved'imperforate plate 8 whichV extendsdownwardly to a certain distancefrom i the forward extremities of saidhangers.y

The remainder of the interspace is closed by a cutting-plate 1, whichlike the plate 8, is secured detachably to said hangers b short piecesof angle-bars 3bolted to both. This cutting-plate has a depressed part 2with are-shaped cuttingV edge formed with the same radius as that of ahollow cylindrical tile 17, and said cutting-.plate is removable, whichpermits substitution of a cutter 2 of a different radius of curvature.

The forward parts of said hangers are braced and supported bytraction-bars 5 which are fastenedto the sub-frame by bolts 7, and tothehangers by bolts 6, and these .bars 5 are offset outwardly at 16 toclear the tor 13.

The cutting-plate 1 is positioned near the blades 14 of said excavator.13, and is drawn forward therewith to cut a shallow longitudinal troughc in the bottom b of the trench a, to fit the curvature of the alinedhollow cylindrical tiles 17. Fig. 4 diagrammatically illustrates theadvantage incident to seating tile 17 in a curved trough c Icut in iirmsoil b as compared to placing it upon the fiat bottom Z) alone. In the.latter method of seating the tile, soft earth filling deposited aboutthe tile does not sufficiently reinforce it against strains which tendto break it along the longitudinal line of its contact with the hardsurface b. Wherer a trough c is supplied, the strain is taken up by theconsiderable extent of surface supported by the rtrough, so breakage isprevented, and the tile kept in longitudinal alinement.

Various modifications in the device are coveredlb7 the principle of myinvention.

Having described my invention, what I claim as new, and desire to secureby'Letters Patent, is:

ln a ditching machine, trench excavating mechanism mounted on atraveling frame, and a follower-groover mounted on said frame comprisingforwardly inclined laterally-spaced hangers, a forwardly-inclinedlreceiving-plate mounted between said haners and terminating short of thelower ends thereof, and a removable cutting-plate mounted between thehangers and filling their interspace anterior to the receivingplate,said cutting-plate having its forward transverse cutting edge mediallydepressed to provide an arcuate groover delivering into thereceiving-plate.

Signed at Waterloo, Iowa, this 7th daj)7 of August, 1919.

ALBERT BRAMER.

